Madeline Blair (born 1905) also known as Adelaide Andrews, Jackie or Blackie was an American prostitute from Bridgeport, Connecticut. She was known for being a stowaway aboard the United States Navy ship USS Arizona and plying her trade while on board the battleship. She is sometimes conflated with Madeleine Blair (note spelling), who was born in St. Louis and later became a brothel madam and activist in Chicago and Canada, and whose autobiography was published in 1919.